A sizing sandblasting device for lost wax casting wax patterns

Abstract

The invention discloses a sizing and sandblasting device for lost wax casting wax molds, belonging to the technical field of lost wax casting. The device is characterized in that: a slewing bearing I is fixedly arranged on a through hole II, a round tube is fixedly arranged on the inner ring of the slewing bearing I, a worm gear is fixedly sleeved on the round tube, a worm gear reducer is fixedly installed inside an octahedral hanging box, a group of stepped teeth are arranged on the round tube, a round rod I is passed through the through hole II, horizontal round rods are arranged on both sides of the round rod I, an internal threaded hole II is arranged on the round rod I, a circular disk is horizontally arranged on the round rod I, a slewing bearing II is arranged on the circular disk, a round cover is arranged on the slewing bearing II, the round cover is provided with the round rod II, and a variable-length mold frame is arranged on the round rod I. The device solves the technical problems that a columnar solid wax mold is easily broken in the middle when the material is thrown off, ceramic particles attached to the bottom of the slurry box during the immersion sizing process easily scratch the wax mold, slurry drips into the sandblasting box to form lumps, easily scratches the wax mold when sprayed onto the wax mold, and the film shell often cracks during the lost wax process. The device is mainly used in wax mold sizing and sandblasting.

Description

Technical Field

[0001] The invention relates to the technical field of lost wax casting, in particular to sizing and sandblasting equipment for lost wax casting wax molds. Background Art

[0002] Lost wax casting is a common casting method used to create complex metal parts. During the lost wax casting process, a wax pattern is first created, sizing it and then coating it with ceramic particles. Finally, the wax pattern is burned away through high-temperature sintering, leaving a cavity for the molten metal to be poured into. However, creating a high-quality wax pattern is a critical step in the entire lost wax casting process.

[0003] The sizing and sandblasting process involves heat-melting the entire wax model onto a wax base and then sizing and sandblasting it. Sizing refers to applying a layer of slurry to the surface of the wax model to increase its surface smoothness and heat resistance. Sandblasting refers to treating the wax model with sprayed sand particles to increase its roughness and adhesion.

[0004] The properties of wax molds are not resistant to high temperatures. In the summer, the temperature in the production workshop is high. When the temperature is high, the workers often deform or deflate the wax molds when taking them. When making special columnar wax molds, such as Panlong columns and Xiangyun sticks, the columnar hollow wax molds are more likely to deform and deflate at high room temperature. Many manufacturers use solid wax molds instead. Solid wax molds can just solve the problem of deflation and deformation. They are hot-melted on the wax base for sizing and sandblasting. During the sizing and sandblasting process, solid wax molds are prone to breakage due to their own weight when throwing away the material. During the sizing box immersion sizing process, the excess material cannot be thrown away, and there will be residue at the bottom. In the residual material, excess slurry will drip into the sandblasting box, causing the ceramic sand to clump. The agglomerated ceramic sand is easy to scratch the wax mold when sprayed onto the wax mold. At the same time, the ceramic particles that are not firmly attached cannot be reliably removed during the sandblasting process. In the next sizing process, the ceramic particles will enter the slurry box and the excess material cannot be shaken off. The ceramic particles will settle and adhere to the bottom of the slurry box in an irregular shape, which is easy to scratch the wax mold during the mold dipping and sizing process. At the same time, the ceramic particles entering the slurry box will cause cracks in the membrane shell during the lost wax process, making it impossible to proceed to the next pouring work. Therefore, our company has launched a study on a sizing sandblasting equipment for lost wax casting wax molds. Summary of the Invention

[0005] The purpose of the present invention is to provide a sizing and sandblasting equipment for lost wax casting wax molds, so as to solve the problem that solid wax molds are easily broken in half due to their own weight when throwing materials during the sizing and sandblasting process. During the sizing process of the sizing box, excess slurry will drip into the sandblasting box, causing ceramic sand to agglomerate. The agglomerated ceramic sand is easy to scratch the wax mold when sprayed onto the wax mold. At the same time, ceramic particles that are not firmly attached cannot be reliably removed during the sandblasting process. In the next sizing process, ceramic particles will enter the slurry box. The ceramic particles will be deposited and attached to the bottom of the slurry box in an irregular shape, which is easy to scratch the wax mold during the sizing process of the immersion mold. At the same time, ceramic particles entering the slurry box will cause the membrane shell to often crack during the lost wax process.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sizing and sandblasting equipment for lost wax casting wax molds, comprising a sizing box, a sandblasting box, a vertical plate, a cover plate, a vertical curtain I, a vertical curtain II and a walking double-chain electric hoist, the sizing box and the sandblasting box are tightly fitted, vertical plates are arranged on the front and rear sides of the sizing box and the sandblasting box, a cover plate is arranged on the vertical plate, a group of vertical curtains I and vertical curtains II are arranged on the cover plate, the bottom of the vertical curtain I is located just above the box opening of the sizing box, and the bottom of the vertical curtain II is located just above the box opening of the sandblasting box, a suction pump is arranged on the sandblasting box, one end of the suction pump is connected to the sandblasting box through a suction pipe, and the other end of the suction pump is connected to the sandblasting box through a spraying pipe, a PLC control cabinet is also arranged on the sandblasting box, a slide rail is horizontally arranged at the bottom of the cover plate, the slide rails pass through the vertical curtain I and the vertical curtain II respectively, and a walking double-chain electric hoist is arranged on the slide rail, characterized in that an octahedral hanging box is arranged below the walking double-chain electric hoist, and the octahedral hanging box is fixedly connected to the chain of the walking double-chain electric hoist, The top surface of the octahedron hanging box is provided with a through hole I, the bottom surface of the octahedron hanging box is provided with a through hole II, a slewing bearing I is fixedly arranged on the through hole II, a round tube is fixedly arranged on the inner ring of the slewing bearing I, a worm wheel is fixedly sleeved on the round tube, a worm reducer is fixedly installed inside the octahedron hanging box, the worm reducer is meshed with the worm wheel for transmission, a group of stepped teeth are provided on the round tube, the stepped teeth are centrally symmetrical with the center of the round tube, the stepped teeth are arranged in an ascending shape, a round rod I is passed through the through hole II, and the round rod I is connected to the through hole II. The holes II are tightly fitted together, horizontal round rods are set on both sides of the round rod I, the diameter of the horizontal round rod is smaller than the size of the step tooth opening distance, an internal threaded hole II is set at the bottom of the round rod I, a disc is set horizontally on the top of the round rod I, a slewing support II is set on the disc, and the slewing support II makes it easier for the disc and the round cover to rotate, a round cover is set on the slewing support II, and a round rod II is set in the center of the round cover, and the round rod II passes through the through hole I and the round rod II is tightly fitted with the through hole I, and a variable length mold frame is spirally set on the round rod I.

[0007] Furthermore, the variable-length mold frame includes an external threaded head sleeve, an internal and external double-threaded connecting pipe and an internal threaded connecting pipe. The bottom of the external threaded head sleeve is threadedly connected to the internal and external double-threaded connecting pipe. There are several internal and external double-threaded connecting pipes and they are threadedly connected in pairs. The top of the internal threaded connecting pipe is threadedly connected to the internal and external double-threaded connecting pipe. A rechargeable box lithium battery I is arranged in the external threaded head sleeve. A manual switch I and a battery charging port I are arranged at the bottom of the rechargeable box lithium battery I. The rechargeable box lithium battery I is fixed to the external threaded head sleeve by a group of support plates. A DC motor controller and a temperature control module I are also arranged inside the rechargeable box lithium battery I. A reduction motor is vertically installed on the rechargeable box lithium battery I. Ⅰ. The DC motor controller and the reduction motor are connected to each other through wires. The top end of the external threaded head sleeve is tilted inward to facilitate the melted wax liquid to flow into the external threaded head sleeve. A heating ring is provided on the external threaded head sleeve. The heating ring and the external threaded head sleeve are connected by an arc plate. The rechargeable box lithium battery Ⅰ, the heating ring and the temperature control module Ⅰ are connected to each other through wires. The arc plate is vertically arranged at the center of the outer wall and inner wall of the external threaded head sleeve. The wall of the arc plate has the same thickness as that of the heating ring. A conical heating block is provided in the internal threaded connecting pipe. The wall of the internal threaded connecting pipe is respectively provided with a liquid pipe and a rubber plug pipe. A rubber plug is provided in the rubber plug pipe. A connecting plate is provided below the internal threaded connecting pipe. A rechargeable box lithium battery II is set below the connecting disk, and a temperature control module II is also set inside the rechargeable box lithium battery II. The conical heating block, the temperature control module II and the rechargeable box lithium battery II are connected to each other through wires. A charging port and a manual switch II are set on the side of the rechargeable box lithium battery II. An external threaded tube is set at the bottom of the rechargeable box lithium battery II, and a hole cutter is installed on the rotating shaft of the reduction motor. The hole cutter rotates in the heating ring and can cut the wax sheet spirally. The top end of the external threaded head sleeve is tilted inward, and a heating ring is set on the external threaded head sleeve. The heating ring and the external threaded head sleeve are connected by an arc plate. The heating ring is connected to the module assembly through a heat pipe, and the arc plate is vertically arranged on the external threaded head. At the center position of the outer wall and inner wall of the sleeve pipe mouth, the thickness of the arc plate pipe wall and the heating ring pipe wall are the same, the heating ring is made of copper, and a conical heating block is arranged in the internal threaded connecting pipe. The conical heating block is heated to prevent the wax liquid from accumulating in the internal threaded connecting pipe. The wall of the internal threaded connecting pipe is respectively provided with a liquid flow pipe and a rubber plug tube, a rubber plug is arranged in the rubber plug tube, a connecting plate is arranged below the internal threaded connecting pipe, a rechargeable box lithium battery II is arranged below the connecting plate, a control module is arranged inside the rechargeable box lithium battery II, the conical heating block, the control module and the rechargeable box lithium battery II are connected to each other by wires, a charging port and a manual switch II are arranged on the side of the rechargeable box lithium battery II, and an external threaded pipe is arranged at the bottom of the rechargeable box lithium battery II.

[0008] Furthermore, the materials of the curtain I and curtain II are PVC curtain sheets, which are non-flammable, high-strength, resistant to climate changes and have excellent geometric stability.

[0009] Furthermore, the upper and lower bases of the octahedral hanging box are two identical hexagons, and both sides of the hexagons are sharp corners that can push the curtain I and the curtain II apart.

[0010] Compared with the prior art, the technical effects and advantages of the present invention are:

[0011] The present invention is provided with a heating ring, an external threaded head sleeve and an arc plate. When the heating ring heats and touches the wax liquid, it first flows to both sides, and the wax melts to form a circular groove. As the heating ring continuously enters the wax mold, the hole cutter contacts the center of the bottom of the wax mold and starts to dig a cylindrical hole. The wall thickness of the external threaded head sleeve is designed to just meet the width of the circular groove. As the depth of the wax enters, the melted wax flows from the rectangular hole formed by the heating ring, the external threaded head sleeve and the arc plate to the inside of the external threaded head sleeve, and the hole cutter contacts the center of the bottom of the wax mold. , start to dig a cylindrical hole. By designing the wall thickness of the external threaded head sleeve to just meet the width of the ring groove, as the depth goes deeper, the wax melted by the heating ring flows from the rectangular hole formed by the heating ring, the external threaded head sleeve and the arc plate to the hole cutter. The top surface of the external threaded head sleeve is tilted inward to play a pushing role. The wax liquid and the wax inside the external threaded head sleeve are unscrewed by the hole cutter, fall freely on the conical heating block, are melted and flow out from the flow pipe, and the unscrewed wax pieces are melted by the contact with the heated conical heating block due to gravity. When the wax liquid flows out, air also enters from the liquid flow tube, continuously digging holes upwards, and ensuring that the external threaded head sleeve fits tightly with the cylindrical wax mold. When the bottom of the cylindrical wax mold contacts the liquid flow tube and the rubber plug tube, it means that the mounting work is completed, and the cylindrical wax mold is slowly pulled out from the variable length mold frame, and the manual switch I of the rechargeable box lithium battery I and the manual switch II of the rechargeable box lithium battery II are closed. The cylindrical wax mold is slowly inserted back into the variable length mold frame. After the end, the rubber plug in the rubber plug tube is pulled out and plugged into the liquid flow tube to form a negative pressure seal, which is different from the existing technology. Compared with the traditional wax mold making technology, the heating ring heats the bottom of the wax mold, and the wax liquid first flows to both sides to form circular grooves. The wall thickness of the external threaded head sleeve just meets the width of the circular groove, so that the external threaded head sleeve and the cylindrical wax mold fit tightly. The rubber plug in the rubber plug tube is pulled out and plugged into the liquid flow tube to form a negative pressure seal. The variable length mold frame firmly absorbs the cylindrical mold to prevent it from breaking in the middle during the material throwing process. If you simply use spiral entry or direct rod insertion, it will cause the entire wax mold to expand, which will cause the entire cylindrical wax mold to deform and become unusable.

[0012] The present invention is designed with a worm gear reducer, a slewing bearing I, a worm wheel fixedly installed on the wall of the circular tube, a set of stepped teeth, a circular rod I and a transverse circular rod. The worm gear reducer drives the internal turbine to rotate forward, and the forward rotation of the internal turbine causes the worm wheel to reverse, and the stepped teeth clamp the transverse circular rod to limit the position, driving the circular rod I to rotate so that the material on the side wall of the wax mold falls in, and the worm gear reducer drives the internal turbine to reverse, and at the same time the speed of the worm gear reducer is increased, and the reverse rotation of the internal turbine causes the worm wheel to rotate forward, driving the circular rod I to rotate rapidly, and the transverse circular rod slides out of the stepped teeth, slides at the mouth of the circular tube, and then falls into the stepped teeth. As the circular tube rotates rapidly, the circular rod I jumps up and down to shake the material at the bottom of the wax mold. The whole work can be switched freely without confirming the position of the horizontal round rod. When the worm gear reducer drives the internal turbine to rotate forward, and the internal turbine rotates forward to make the worm gear reverse, the stepped teeth can clamp the horizontal round rod and limit it, so that the round rod I rotates. Compared with the existing technology, this technical solution can not only shake off the material on the side wall of the wax mold, but also shake off the material at the bottom of the wax mold, avoiding the excess slurry dripping into the sandblasting box to cause the ceramic sand to clump, and the agglomerated ceramic sand scratches the wax mold when sprayed onto the wax mold. The ceramic particles enter the slurry box and cannot shake off the excess material. The ceramic particles will be deposited and attached to the bottom of the slurry box in an irregular shape, scratching the wax mold during the dipping and sizing process.

[0013] During dewaxing and casting, the present invention leaves a cavity, and when the wax mold is placed upside down in a lost wax furnace for heating, the wax molecules are melted by the heat and flow out quickly from the formed cylindrical cavity, thereby avoiding the wax molecules from bursting the external mold due to the heat at the beginning, and avoiding the wax molecules from rapidly expanding and bursting the mold due to the heat in a short period of time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of the internal structure of the present invention;

[0015] Figure 2 For the present invention Figure 1 The internal structure of some structures in Figure 1 ;

[0016] Figure 3 For the present invention Figure 1 The internal structure of some structures in Figure 2 ;

[0017] Figure 4 For the present invention Figure 1 The internal structure of some structures in Figure 3 ;

[0018] Figure 5 A three-dimensional diagram of a variable-length mold frame according to the present invention;

[0019] Figure 6 A three-dimensional diagram of the external threaded head sleeve of the present invention;

[0020] Figure 7 For the present invention Figure 6 Part of the internal structure diagram;

[0021] Figure 8 For the present invention Figure 7 A partial enlarged view of point A;

[0022] Figure 9 This is a three-dimensional diagram of the internal and external double-threaded connecting pipe of the present invention;

[0023] Figure 10 A three-dimensional diagram of the internal threaded connecting pipe, connecting plate and rechargeable box lithium battery II of the present invention;

[0024] Figure 11 A three-dimensional diagram of the motor, support plate and hole cutter of the present invention;

[0025] Figure 12 For the present invention Figure 11 A partial cross-sectional view of

[0026] Figure 13 This is a diagram showing the wax model of the present invention being put on a rack and the wax being removed;

[0027] Figure 14 The wax pattern of the present invention is prepared for sizing and sandblasting. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0029] like Figure 1 - Figure 14As shown: A sizing and sandblasting equipment for lost wax casting wax patterns, including a sizing box 1, a sandblasting box 2, a vertical plate 3, a cover plate 4, a curtain I 5, a curtain II 6 and a walking double-chain electric hoist 11. The sizing box 1 and the sandblasting box 2 are tightly fitted, and vertical plates 3 are set on the front and back sides of the sizing box 1 and the sandblasting box 2. A cover plate 4 is set on the vertical plate 3. A group of curtains I 5 and curtains II 6 are set on the cover plate 4. The bottom of the curtain I 5 is located just above the box opening of the sizing box 1, and the bottom of the curtain II 6 is located just above the box opening of the sandblasting box 2. A suction pump 7 is set on the sandblasting box 2. One end of the suction pump 7 is connected to the sandblasting box 2 through the suction pipe 8, and the other end of the suction pump 7 is connected to the sandblasting box 2 through the spraying pipe 9. A plc control cabinet is also provided on the sandblasting box 2. A slide rail 10 is provided horizontally at the bottom of the cover plate 4. The slide rail 10 passes through the curtain Ⅰ5 and the curtain Ⅱ6 respectively. A walking double-chain electric hoist 11 is provided on the slide rail 10. It is characterized in that an octahedral hanging box 12 is provided below the walking double-chain electric hoist 11. The octahedral hanging box 12 is fixedly connected to the chain of the walking double-chain electric hoist 11. The top surface of the octahedral hanging box 12 is provided with a through hole Ⅰ1 3. A through hole II 14 is provided on the bottom surface of the octahedron hanging box 12. A slewing bearing I 15 is fixedly provided on the through hole II 14. A round tube 16 is fixedly provided on the inner ring of the slewing bearing I 15. A worm gear 17 is fixedly provided on the round tube 16. A worm gear reducer 18 is fixedly installed inside the octahedron hanging box 12. The worm gear reducer 18 is meshed with the worm gear 17 for transmission. A set of stepped teeth 19 is provided on the round tube 16. The stepped teeth 19 are centrally symmetrical with the center of the round tube 16. The stepped teeth 19 are arranged in an ascending shape. A round rod I 20 is provided through the through hole II 14 and the round rod Ⅰ20 fits tightly with the through hole Ⅱ14, horizontal round rods 21 are set on both sides of the round rod Ⅰ20, the diameter of the horizontal round rod 21 is smaller than the opening distance of the stepped teeth 19, an internal threaded hole Ⅱ is set at the bottom of the round rod Ⅰ20, a disc 22 is horizontally set on the top of the round rod Ⅰ20, a slewing bearing Ⅱ23 is set on the disc 22, a round cover 24 is set on the slewing bearing Ⅱ23, a round rod Ⅱ25 is set in the center of the round cover 24, the round rod Ⅱ25 passes through the through hole Ⅰ13 and the round rod Ⅱ25 fits tightly with the through hole Ⅰ13, and a variable length mold frame 26 is spirally set on the round rod Ⅰ20.

[0030] The variable length mold frame 26 includes an external threaded head sleeve 27, an internal and external double threaded connecting pipe 28 and an internal threaded connecting pipe 29. The bottom of the external threaded head sleeve 27 is threadedly connected to the internal and external double threaded connecting pipe 28. There are several internal and external double threaded connecting pipes 28 and they are threadedly connected in pairs. The top of the internal threaded connecting pipe 29 is threadedly connected to the internal and external double threaded connecting pipe 28. A rechargeable box lithium battery I30 is set in the external threaded head sleeve 27. A manual switch I31 and a battery charging port I32 are set at the bottom of the rechargeable box lithium battery I30. The lithium battery I 30 is fixed to the external threaded head sleeve 27 by a set of support plates 33. A DC motor controller 34 and a temperature control module I 38 are also provided inside the rechargeable box lithium battery I 30. A reduction motor 35 is vertically installed on the rechargeable box lithium battery I 30. The rechargeable box lithium battery I 30, the DC motor controller 34 and the reduction motor 35 are connected to each other through wires. The top of the external threaded head sleeve 27 is tilted inward. A heating ring 36 is provided on the external threaded head sleeve 27. Between the heating ring 36 and the external threaded head sleeve 27 The rechargeable box lithium battery Ⅰ30, the heating ring 36 and the temperature control module Ⅰ38 are connected to each other through the arc plate 37. The arc plate 37 is vertically arranged at the center of the outer wall and inner wall of the external threaded head sleeve 27. The wall of the arc plate 37 has the same thickness as the wall of the heating ring 36. A conical heating block 39 is arranged in the internal threaded connecting tube 29. The wall of the internal threaded connecting tube 29 is respectively provided with a liquid pipe 40 and a rubber plug tube 41. A rubber plug 42 is arranged in the rubber plug tube 41. A connecting plate is arranged below the internal threaded connecting tube 29. 43. A rechargeable box lithium battery II 44 is set below the connecting disk 43. A temperature control module II 45 is also set inside the rechargeable box lithium battery II 44. The conical heating block 39, the temperature control module II 45 and the rechargeable box lithium battery II 44 are connected to each other through wires. A charging port 46 and a manual switch II 47 are set on the side of the rechargeable box lithium battery II 44. An external threaded tube 48 is set at the bottom of the rechargeable box lithium battery II 44. A hole cutter 49 is installed on the rotating shaft of the reduction motor 35, and the hole cutter 49 rotates in the heating ring 36.

[0031] The materials of the vertical curtain I 5 and the vertical curtain II 6 are PVC curtain sheets.

[0032] The upper and lower bases of the octahedral hanging box 12 are two identical hexagons.

[0033] The working principle of the present invention is as follows:

[0034] The first step is to put the work on the shelves:

[0035] Staff A measures the length of the columnar wax model that needs to be sizing and sandblasted. Staff A inserts an external hose into the fluid pipe 40. Staff B threadably connects multiple internal and external double-threaded connecting pipes 28, and the internal threaded connecting pipe 29 is threadably connected to the internal and external double-threaded connecting pipe 28. Staff B turns on the manual switch Ⅰ31 at the bottom of the rechargeable box lithium battery Ⅰ30 inside the external threaded head sleeve 27. The reduction motor 35 starts to work and drives the hole cutter 49 to rotate. The DC motor controller 34 controls the rotation speed of the reduction motor 35. At the same time, the heating ring 36 starts to preheat. The temperature control module Ⅰ38 controls the heating ring 36 to reach a constant temperature that can melt the wax model and maintain the temperature. Staff B The staff threadedly connected the bottom of the external threaded head sleeve 27 with the internal and external double threaded connecting pipe 28 and turned on the manual switch II 47. The conical heating block 39 began to heat up. The temperature control module II 45 controlled the conical heating block 39 to reach a constant temperature that could melt the wax model and maintained the temperature. The total length of the variable length mold frame 26 was less than the length of the columnar wax model. The staff member A turned the variable length mold frame 26 upside down and held the variable length mold frame 26 vertically to the ground. The staff member B picked up the columnar wax model and aligned the center of the bottom of the columnar wax model with the hole cutter 49. The heating ring 36 came into contact with the wax model. The wax liquid first flowed to both sides. The wax melted to form a circular groove. As the heating ring 36 continued to After entering the wax mold, the piercing knife 49 contacts the center of the bottom of the wax mold and starts to pierce the cylindrical hole. The wall thickness of the external threaded head sleeve 27 is designed to just meet the width of the circular groove. As the depth goes deeper, the melted wax flows from the rectangular hole formed by the heating ring 36, the external threaded head sleeve 27 and the arc plate 37 to the inside of the external threaded head sleeve 27. The top surface of the external threaded head sleeve 27 is tilted inward to play a pushing role. The wax liquid and the wax inside the external threaded head sleeve 27 are screwed down by the piercing knife 49, fall freely on the conical heating block 39, are melted and flow out from the liquid flow pipe 40. As the wax liquid flows out, air also enters from the liquid flow pipe 40. Wait until the bottom of the columnar wax mold contacts the liquid flow pipe 40. 0 and the rubber plug tube 41, it means that the shelving work is completed. Staff B slowly pulls out the columnar wax mold from the variable-length mold frame 26. Staff A unscrews the external threaded head sleeve 27, turns off the manual switch Ⅰ31 of the rechargeable box lithium battery Ⅰ30, and then puts it back. At the same time, turns off the manual switch Ⅱ47 of the rechargeable box lithium battery Ⅱ44. Staff B then slowly inserts the columnar wax mold into the variable-length mold frame 26. The external threaded head sleeve 27 fits tightly with the columnar wax mold. After completion, staff A pulls out the rubber plug 42 in the rubber plug tube 41 and plugs it into the liquid pipe 40 to form a negative pressure seal. In the next step of sizing and sandblasting, it prevents the entire wax mold from falling due to insufficient air tightness.

[0036] The second step is sizing and sandblasting:

[0037] The sizing box 1 is filled with slurry, and the sandblasting box 2 is filled with ceramic particles, such as Figure 1As shown, the walking double-chain electric hoist 11 moves to the initial position, and the variable-length mold frame 26 and the wax mold are screwed onto the round rod Ⅰ 20. The PLC control cabinet is operated. The walking double-chain electric hoist 11 receives the signal from the PLC control cabinet and moves to the center of the sizing box 1. At the same time, the chains on both sides are lowered, and the wax mold is immersed in the sizing box 1 and then lifted. The worm gear reducer 18 drives the internal turbine to rotate forward, and the internal turbine rotates forward to cause the worm gear 17 to reverse. The stepped teeth 19 clamp the horizontal round rod 21 to limit the position, driving the round rod Ⅰ 20 to rotate so that the liquid on the side wall of the wax mold is thrown out and falls into the sizing box 1. Two minutes later, the worm gear reducer 18 drives the internal turbine to reverse, and at the same time the speed of the worm gear reducer 18 is increased. The internal turbine reversal causes the worm wheel 17 to rotate forward, driving the round rod Ⅰ 20 to rotate rapidly and the horizontal round rod 21 slides out of the stepped teeth 19. The horizontal round rod 21 slides at the mouth of the round tube 16 and then falls into the stepped teeth 19. With the rapid rotation of the round tube 16, the round rod Ⅰ 20 jumps up and down to shake off the slurry at the bottom of the wax mold. It stops after one minute and there is no excess slurry on the side walls and bottom of the wax mold. After the end, the PLC control cabinet controls the walking double-chain electric hoist 11 to move to the sandblasting box 2, and the octahedron hoist The box 12 pushes the curtain Ⅰ5 to both sides. When the walking double-chain electric hoist 11 moves to the center of the sandblasting box 2, the suction pump 7 starts the sandblasting work, and the worm gear reducer 18 starts to drive the internal turbine to rotate forward. The internal turbine rotates forward to make the worm gear 17 reverse. There is no need to confirm the position of the horizontal round rod 21. The stepped teeth 19 can clamp the horizontal round rod 21 to limit the position. The suction pump 7 starts the sandblasting work for two minutes and then stops working. The worm gear reducer 18 continues to drive the internal turbine to rotate forward and continues for four minutes. The round rod Ⅰ20 rotates to make the particles that are not firmly attached to the side wall of the wax mold fall out into the sandblasting box 2. After the end, the worm gear reducer 18 drives the internal turbine to reverse, and at the same time the speed of the worm gear reducer 18 is increased. The internal turbine reversal causes the worm wheel 17 to rotate forward, driving the round rod Ⅰ 20 to rotate quickly. The horizontal round rod 21 slides out of the stepped teeth 19, and the horizontal round rod 21 slides at the mouth of the round tube 16 and then falls into the stepped teeth 19. With the rapid rotation of the round tube 16, the round rod Ⅰ 20 jumps up and down to shake off the sand particles that are not firmly attached to the bottom of the wax mold. It stops after one minute. After solidification, the walking double-chain electric hoist 11 moves to the center position of the box mouth of the sizing box 1 and continues the above work. The whole process lasts 5-6 times.

[0038] The third step is to take the modulus:

[0039] The walking double-chain electric hoist 11 moves to the initial position, and staff members A and B simultaneously remove the variable-length mold frame 26 and the wax mold from the round rod Ⅰ20 by spiral. Staff member A holds the whole, and staff member B pulls out the rubber plug 42 inserted into the liquid pipe 40 and plugs it back into the rubber plug tube 41, and pulls out the variable-length mold frame 26. Air enters to facilitate quick extraction, and then the two people place the wax mold after sizing and sandblasting in a cool place, waiting for the next step of dewaxing process.

[0040] Step 4: Dewaxing and Casting:

[0041] The dried wax mold is placed upside down in a lost wax furnace to heat it. The wax molecules melt due to the heat and flow out quickly from the formed cylindrical cavity, avoiding the wax molecules from bursting the outer mold due to the heat at the beginning. After the lost wax process is completed, the mold is taken out and the molten metal solution is poured into it from the hole for casting.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sizing and sandblasting device for lost wax casting wax patterns, comprising a sizing box (1), a sandblasting box (2), a vertical plate (3), a cover plate (4), a vertical curtain I (5), a vertical curtain II (6) and a walking double-chain electric hoist (11), wherein the sizing box (1) and the sandblasting box (2) are tightly fitted, vertical plates (3) are provided on the front and rear sides of the sizing box (1) and the sandblasting box (2), a cover plate (4) is provided on the vertical plate (3), a group of vertical curtains I (5) and vertical curtains II (6) are provided on the cover plate (4), and the bottom of the vertical curtain I (5) is located just above the box opening of the sizing box (1). The bottom of the vertical curtain II (6) is located just above the opening of the sandblasting box (2). A suction pump (7) is provided on the sandblasting box (2). One end of the suction pump (7) is connected to the sandblasting box (2) through a suction pipe (8). The other end of the suction pump (7) is connected to the sandblasting box (2) through a spray pipe (9). A PLC control cabinet is also provided on the sandblasting box (2). A slide rail (10) is transversely provided at the bottom of the cover plate (4). The slide rail (10) passes through the vertical curtain I (5) and the vertical curtain II (6) respectively. A walking double-chain electric hoist (11) is provided on the slide rail (10). The invention is characterized in that: An octahedral hanging box (12) is provided below the walking double-chain electric hoist (11), and the octahedral hanging box (12) is fixedly connected to the chain of the walking double-chain electric hoist (11). A through hole I (13) is provided on the top surface of the octahedral hanging box (12), and a through hole II (14) is provided on the bottom surface of the octahedral hanging box (12). A slewing bearing I (15) is fixedly provided on the through hole II (14), and a circular tube (16) is fixedly provided on the inner ring of the slewing bearing I (15). A worm gear (17) is fixedly provided on the circular tube (16). A worm gear reducer (18) is fixedly installed inside the octahedral hanging box (12), and the worm gear reducer (18) is meshed with the worm gear (17) for transmission. A group of stepped teeth (19) is provided on the circular tube (16), and the stepped teeth (19) are centrally symmetrical with the center of the circular tube (16). , the stepped teeth (19) are arranged in an ascending shape, a round rod I (20) is set through the through hole II (14) and the round rod I (20) and the through hole II (14) are tightly fitted, horizontal round rods (21) are set on both sides of the round rod I (20), the diameter of the horizontal round rod (21) is smaller than the opening distance of the stepped teeth (19), an internal threaded hole II is set at the bottom of the round rod I (20), a disk (22) is set horizontally on the top of the round rod I (20), a slewing support II (23) is set on the disk (22), a round cover (24) is set on the slewing support II (23), a round rod II (25) is set at the center of the round cover (24), the round rod II (25) passes through the through hole I (13) and the round rod II (25) and the through hole I (13) are tightly fitted, and a variable length mold frame (26) is spirally set on the round rod I (20).

2. A sizing sandblasting device for lost wax casting wax patterns according to claim 1, characterized in that: The variable length mold frame (26) includes an external threaded head sleeve (27), an internal and external double threaded connecting pipe (28) and an internal threaded connecting pipe (29). The bottom of the external threaded head sleeve (27) is threadedly connected to the internal and external double threaded connecting pipe (28). The internal and external double threaded connecting pipes (28) are multiple and threadedly connected in pairs. The top of the internal threaded connecting pipe (29) is threadedly connected to the internal and external double threaded connecting pipe (28). A rechargeable box lithium battery I (30) is set in the external threaded head sleeve (27). A manual switch I (31) and a battery charging port I (32) are set at the bottom of the rechargeable box lithium battery I (30). (30) is fixed to the external threaded head sleeve (27) through a set of support plates (33), a DC motor controller (34) and a temperature control module I (38) are also provided inside the rechargeable box lithium battery I (30), a reduction motor (35) is vertically installed on the rechargeable box lithium battery I (30), the rechargeable box lithium battery I (30), the DC motor controller (34) and the reduction motor (35) are connected to each other through wires, the top end of the external threaded head sleeve (27) is tilted inward, a heating ring (36) is provided on the external threaded head sleeve (27), and an arc is provided between the heating ring (36) and the external threaded head sleeve (27). The arc plate (37) is connected, and the rechargeable box lithium battery I (30), the heating ring (36) and the temperature control module I (38) are connected to each other through wires. The arc plate (37) is vertically arranged at the center of the outer wall and inner wall of the external threaded head sleeve (27). The wall of the arc plate (37) and the wall of the heating ring (36) have the same thickness. A conical heating block (39) is arranged in the internal threaded connecting pipe (29). The wall of the internal threaded connecting pipe (29) is respectively provided with a liquid pipe (40) and a rubber plug pipe (41). A rubber plug (42) is arranged in the rubber plug pipe (41). A connecting plate (42) is arranged below the internal threaded connecting pipe (29). 3), a rechargeable box lithium battery II (44) is provided below the connection plate (43), a temperature control module II (45) is further provided inside the rechargeable box lithium battery II (44), the conical heating block (39), the temperature control module II (45) and the rechargeable box lithium battery II (44) are connected to each other through wires, a charging port (46) and a manual switch II (47) are provided on the side of the rechargeable box lithium battery II (44), an external threaded tube (48) is provided at the bottom of the rechargeable box lithium battery II (44), a hole cutter (49) is installed on the rotating shaft of the reduction motor (35), and the hole cutter (49) rotates in the heating ring (36).

3. The sizing and sandblasting equipment for lost wax casting wax patterns according to claim 1, characterized in that: The materials of the vertical curtain I (5) and the vertical curtain II (6) are PVC curtain sheets.

4. The sizing and sandblasting equipment for lost wax casting wax patterns according to claim 1, characterized in that: The upper base and the lower base of the octahedral hanging box (12) are two identical hexagons.

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